import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
public class Message extends JDialog implements ActionListener
{
    Hashtable 基本信息表=null;
    JTextField 学号,姓名,专业,年级,出生;
    JRadioButton 男,女;
    JButton 查询;
    ButtonGroup group=null;
    FileInputStream inOne=null;
    ObjectInputStream inTwo=null;
    File file=null;
    public Message(JFrame f,File file)
    {
        super(f,"查询对话框",false);
        this.file=file;
        学号=new JTextField(10);
        查询=new JButton("查询");
        学号.addActionListener(this);
        查询.addActionListener(this);
        姓名=new JTextField(10);
        姓名.setEditable(false);
        专业=new JTextField(10);
        专业.setEditable(false);
        年级=new JTextField(10);
        年级.setEditable(false);
        出生=new JTextField(10);
        出生.setEditable(false);
        男=new JRadioButton("男",false);
        女=new JRadioButton("女",false);
        group=new ButtonGroup();
        group.add(男);
        group.add(女);
        Box box1=Box.createHorizontalBox();
        box1.add(new JLabel("输入要查询的学号:",JLabel.CENTER));
        box1.add(学号);
        box1.add(查询);
        Box box2=Box.createHorizontalBox();
        box2.add(new JLabel("姓名:",JLabel.CENTER));
        box2.add(姓名);
        Box box3=Box.createHorizontalBox();
        box3.add(new JLabel("性别:",JLabel.CENTER));
        box3.add(男);
        box3.add(女);
        Box box4=Box.createHorizontalBox();
        box4.add(new JLabel("专业:",JLabel.CENTER));
        box4.add(专业);
        Box box5=Box.createHorizontalBox();
        box5.add(new JLabel("年级:",JLabel.CENTER));
        box5.add(年级);
        Box box6=Box.createHorizontalBox();
        box6.add(new JLabel("出生:",JLabel.CENTER));
        box6.add(出生);
        Box boxH=Box.createVerticalBox();
        boxH.add(box1);
        boxH.add(box2);
        boxH.add(box3);
        boxH.add(box4);
        boxH.add(box5);
        boxH.add(box6);
        boxH.add(Box.createVerticalGlue());
        JPanel pCenter=new JPanel();
        pCenter.add(boxH);
        Container con=getContentPane();
        con.add(pCenter,BorderLayout.CENTER);
        con.validate();
        setVisible(false);
        setBounds(100,200,360,270);
        addWindowListener(new WindowAdapter()
        { public void windowClosing(WindowEvent e)
        {
            setVisible(false);
        }
        });
    }
    public void actionPerformed(ActionEvent e)
    {
        姓名.setText(null);
        专业.setText(null);
        年级.setText(null);
        出生.setText(null);

        if(e.getSource()==查询||e.getSource()==学号)
        {
            String number="";
            number=学号.getText();

            if(number.length()>0)
            {
                try {
                    inOne=new FileInputStream(file);
                    inTwo=new ObjectInputStream(inOne);
                    基本信息表=(Hashtable)inTwo.readObject();
                    inOne.close();
                    inTwo.close();
                }
                catch(Exception ee)
                {
                }
                if(基本信息表.containsKey(number))
                {
                    Student stu=(Student)基本信息表.get(number);
                    姓名.setText(stu.getName());
                    专业.setText(stu.getDisciping());
                    年级.setText(stu.getGrade());
                    出生.setText(stu.getBorth());
                    if(stu.getSex().equals("男"))
                    {
                        男.setSelected(true);
                    }
                    else
                    {
                        女.setSelected(true);
                    }

                }
                else
                {
                    String warning="该学号不存在!";
                    JOptionPane.showMessageDialog(this,warning,"警告",JOptionPane.WARNING_MESSAGE);
                }
            }
            else
            {
                String warning="必须要输入学号!";
                JOptionPane.showMessageDialog(this,warning,"警告",JOptionPane.WARNING_MESSAGE);
            }
        }
    }
}
